Index: lld/ELF/LinkerScript.cpp
===================================================================
--- lld/ELF/LinkerScript.cpp
+++ lld/ELF/LinkerScript.cpp
@@ -772,6 +772,15 @@
   if ((sec->flags & SHF_ALLOC) && sec->addrExpr)
     setDot(sec->addrExpr, sec->location, false);
 
+  // If the address of the section has been moved forward by an explicit
+  // expression so that it now starts past the current curPos of the enclosing
+  // region, we need to expand the current region to account for the space
+  // between the previous section, if any, and the start of this section.
+  if (ctx->memRegion && ctx->memRegion->curPos < dot) {
+    expandMemoryRegion(ctx->memRegion, dot - ctx->memRegion->curPos,
+                       ctx->memRegion->name, sec->name);
+  }
+
   switchTo(sec);
 
   if (sec->lmaExpr)
Index: lld/test/ELF/linkerscript/section-gap-explicit-expr.test
===================================================================
--- /dev/null
+++ lld/test/ELF/linkerscript/section-gap-explicit-expr.test
@@ -0,0 +1,25 @@
+# REQUIRES: x86
+
+# RUN: echo ".section .aaa, \"a\"; .quad 0; .section .bbb, \"a\"; .quad 0;" \
+# RUN:   | llvm-mc -filetype=obj -triple=x86_64-pc-linux - -o %t
+# RUN: ld.lld %t --script %s -o %t2
+
+# RUN: llvm-objdump -section-headers %t2 | FileCheck %s
+# CHECK: .aaa_s 00000008 0000000000000000 DATA
+# CHECK: .bbb_s 00000008 0000000000000014 DATA
+
+MEMORY {
+  REGION (rwx) : ORIGIN = 0x0000, LENGTH = 0x100
+}
+
+SECTIONS {
+  .aaa_s ORIGIN(REGION) :
+  {
+    *(.aaa)
+  } > REGION
+
+  .bbb_s ORIGIN(REGION) + 0x14 :
+  {
+    *(.bbb)
+  } > REGION
+}